Editing v0.34:Tile attributes

{{quality|Fine|05:52, 19 January 2011 (UTC)}}{{av}}


Every tile in Dwarf Fortress is described as {{DFtext|Outside|3:1}} or {{DFtext|Inside|6:0}}, {{DFtext|Light|6:1}} or {{DFtext|Dark|0:1}}, and {{DFtext|Above Ground|2:1}} or {{DFtext|Subterranean|0:1}}. These keywords can be observed from the {{k|k}} menu, when the cursor is located over any single tile. 

There are 8 different combinations, and only some of them occur naturally:
* Outside Light Above Ground - Outdoors
* Outside Light Subterranean - Impossible
* Outside Dark Above Ground - Impossible
* Outside Dark Subterranean - Impossible
* Inside Light Above Ground - Constructed buildings on the surface
* Inside Light Subterranean - In version 0.23.130.23a and earlier, excavated tiles between the cave river and the cliff face (though the game didn't actually display tile attributes back then)
* Inside Dark Above Ground - In version 0.31.12 and earlier, obsidian towers built by the Goblins
* Inside Dark Subterranean - Underground tunnels, including most of your fortress

Being in the Dark causes cave adaptation to increase, and being Outside causes it to decrease (along with stunning/nausea if the sun is out). 

The entire [[Location|fortress site]] starts out as {{DFtext|Inside |6:0}}{{DFtext|Dark Subterranean|0:1}}. After that, a ray for {{DFtext|Outside|3:1}} and a ray for {{DFtext|Light |6:1}}{{DFtext|Above Ground|2:1}} falls straight down from the highest [[z-level]] for every (x,y) position on the local map, changing each tile's modifiers until something that blocks that particular "ray" is encountered. Due to this behavior, any of the previous three tile combinations will never be encountered in the same (x,y) position on a lower z-level than a higher numbered combination.

== Outside vs. Inside ==

This attribute is determined by whether there is a roof of some kind over a tile. Weather only affects tiles which are ''Outside''. Almost any kind of geometry will block the ''Outside'' ray including natural and constructed [[wall]]s, [[floor]]s, [[stair]]s, and [[fortification]]s, and open and closed [[bridge]]s, [[grate|floor grates]], [[bars|floor bars]], and [[hatch]]es. A tile which is ''Outside'' will always be ''Light Above Ground'', but an ''Inside'' tile may be either ''Light Above Ground'' or ''Dark Subterranean''.

== Light vs. Dark and Above Ground vs. Subterranean ==

Currently these two attributes are determined in exactly the same way. Once an area is exposed to the outside world, it is ''Above Ground'' and ''Light'' (and thus channeling this tile will make the tile below it also ''Above Ground'' and ''Light''). Even after being covered up again, it will remain this way. This allows growing outdoor crops inside safely.

[[Ice]] will allow light to pass through, marking tiles as "light" and "above ground."

{{Category|Map tiles|*}}